“One nickel, one secret. No exchanges, no refunds.”

“The less of one's life one must exchange for money, the more freedom one may enjoy.”

“It is one thing to be supportive, and another to be in exchange for nothing.”

“I buried a nickel under the porch when I was 8, she said, but one day my grandma died & they sold the house & I never got to go back for it.
A nickel used to mean something, I said.
She nodded. It still does, she said & then she started to cry.”

“By virtue of exchange, one man's prosperity is beneficial to all others.”

“One and one and one and one doesn't equal four. Each one remains unique, there is no way of joining them together. They cannot be exchanged, one for the other. They cannot replace each other.”

“Listen to the secret sound, the real sound, which is inside you. The one no one talks of speaks the secret sound to himself, and he is the one who has made it all.”

“The exchange of one fear or pleasure or pain for another fear or pleasure or pain, which are measured like coins, the greater with the less, is not the exchange of virtue. O, my dear Simmias, is there not one true coin, for which all things ought to exchange?—and that is wisdom; and only in exchange for this, and in company with this, is anything truly bought or sold, whether courage or temperance or justice. …in the true exchange, there is a purging away of all these things, and temperance, and justice, and courage, and wisdom herself are a purgation of them.”

“Friendship is an arrangement by which we undertake to exchange small favors for big ones.”

“A nickel ain't worth a dime anymore.”